Alternative Title

Study of electrical discharge in water for the removal of pollutants and maximizing energetic efficiency

Abstract

Objective of this study is to use electrical methods for treating aqueous solutions containing organic pollutants. Electrical injected into the system is partly converted into chemical energy due to the electron energetic. This phenomenon creates some radical and excited species, which can react with molecules present and/or between themselves to degrade pollutants and/or put up stable molecules. Three electrical methods are analysed : stream, spark and corona discharge in moist air above the liquid surface. The electrical characterization of streamers is studied according to the applied voltage and conductivity of the solution to establish a summary of electrical energy expended to create streamers : a significant amount of energy streamers is obtained with high value of voltage and conductivity as results. The efficiency of three methods on the degradation of pollutants is verified by using chemical analysis (HPLC, TOC).